Finished fibers and textiles
View Patent ↗Fibers and fabrics having microcapsules containing active components adhered to the fibers and textiles by a binder material are provided. The fibers and textiles are produced by applying to the fiber and textiles a dispersion containing the microcapsules and the binder.
1. A substrate comprising fibers or textile fabrics, finished with a mixture comprising:
(1) microcapsules comprising a membrane and a matrix, said membrane comprising chitosan and said matrix containing an active component having a care effect selected from the group consisting of squalene, chitosan, retinol, caffeine, vegetable proteins, hydrolysis products of vegetable proteins, carotenes and jojoba oils; and
(2) a binder selected from the group consisting of polymeric melamine compounds, polymeric glyoxal compounds, polymeric silicone compounds, epichlorohydrin-crosslinked polyamidoamines, polyalkylene glycols, poly(meth)acrylates, polymeric fluorocarbons, and mixtures thereof,
wherein the amount of said binder is sufficient to adhere at least a portion of said microcapsules to said fibers or fabric,
wherein said microcapsules and said binder are present in the mixture in a ratio by weight of from 75:25 to 25:75,
wherein said mixture is applied by pressure application, and
wherein said finished fibers or textile fabrics exhibit a care effect from said active component after at least one wear-and-wash cycle.
2. The substrate comprising fibers or textile fabrics as claimed in claim 1 , wherein the microcapsules have an active component content of 1 to 30% by weight.
3. The substrate comprising fibers or textile fabrics as claimed in claim 1 , wherein the microcapsules have a mean diameter of from 0.0001 to 5 mm.
4. The substrate comprising fibers or textile fabrics of claim 1 , wherein said binder comprises a compound selected from the group consisting of polyalkylene glycols, poly(meth)acrylates and polymeric melamine compounds.
5. The substrate comprising fibers or textile fabrics of claim 1 , wherein said active component has moisturizing properties.
6. The substrate comprising fibers or textile fabrics of claim 5 , wherein said active component comprises caffeine and said binder comprises polyethylene glycol.
7. The substrate comprising fibers or textile fabrics of claim 1 in the form of a garment, wherein said binder is present in an amount such that at least a portion of the microcapsule is not covered by the binder and such that at least a portion of said microcapsule is in direct contact with the skin of the wearer of the garment when the garment is being worn immediately after treatment.
8. The substrate comprising fibers or textile fabrics of claim 1 wherein said binder is present in an amount such that the weight ratio of microcapsule to binder is greater than about 50:50.
9. The substrate comprising fibers or textile fabrics of claim 1 in the form of a garment, wherein said binder is present in an amount such that substantially all of the microcapsule is covered by the binder and such that no substantial portion of said microcapsule is in direct contact with the skin of the wearer of the garment when the garment is being worn immediately after treatment.
10. The substrate comprising fibers or textile fabrics of claim 1 wherein said binder is present in an amount such that the weight ratio of microcapsule to binder is less than about 50:50.
11. The substrate comprising fibers or textile fabrics of claim 1 , wherein said microcapsules have a mean diameter of from 0.001 to 0.5 mm.
12. The substrate of claim 1 wherein said active component having a care effect is selected from the group consisting of vegetable proteins, hydrolysis products of vegetable proteins, caffeine and jojoba oils.
13. A method of providing a care effect on skin, comprising the steps of:
(1) providing a substrate comprising fibers and/or textile fabrics, finished with a mixture comprising:
(a) microcapsules comprising a membrane and a matrix, said membrane comprising chitosan and said matrix containing an active component having a care effect selected from the group consisting of squalene, chitosan, retinol, caffeine, vegetable proteins, hydrolysis products of vegetable proteins, carotenes and jojoba oils; and
(b) a binder selected from the group consisting of polymeric melamine compounds, polymeric glyoxal compounds, polymeric silicone compounds, epichlorohydrin-crosslinked polyamidoamines, polyalkylene glycols, poly(meth)acrylates, polymeric fluorocarbons, and mixtures thereof, wherein the amount of said binder is sufficient to adhere at least a portion of said microcapsules to said fibers and/or fabric,
wherein said microcapsules and said binder are present in the mixture in a ratio by weight of from 75:25 to 25:75, wherein said mixture is applied by pressure application; and
(2) wearing said finished substrate, wherein transfer of said active component to the skin provides a care effect from said active component, and wherein said care effect is still exhibited after at least one wear-and-wash cycle.
14. The method of claim 13 , wherein said substrate comprising fibers and/or textile fabrics, comprises an end product or semifinished product which is worn in direct contact with the skin.
15. The method of claim 14 , wherein said end product or semifinished product is selected from the group consisting of underwear, swimwear, nightwear, hose and pantyhose.